What conditions should be respected in order to carry out the precipitation titration (Mohr method)? a. If too little indicator is used, the silver concentration must be higher at equivalence point before any precipitation of Ag2CrO4 occurs; if too much indicator is used, the color change will be difficult to see due to the intense yellow color. b. The method works in the pH region of 6-9 only. c. Calcium carbonate is added to reduce the acidity of the sample. d. All of the above
What conditions should be respected in order to carry out the precipitation titration (Mohr method)? a. If too little indicator is used, the silver concentration must be higher at equivalence point before any precipitation of Ag2CrO4 occurs; if too much indicator is used, the color change will be difficult to see due to the intense yellow color. b. The method works in the pH region of 6-9 only. c. Calcium carbonate is added to reduce the acidity of the sample. d. All of the above
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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What conditions should be respected in order to carry out the precipitation titration (Mohr method)?
a. If too little indicator is used, the silver concentration must be higher at equivalence point before any precipitation of Ag2CrO4 occurs; if too much indicator is used, the color change will be difficult to see due to the intense yellow color.
b. The method works in the pH region of 6-9 only.
c. Calcium carbonate is added to reduce the acidity of the sample.
d. All of the above
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